US7713289B2 - Device for fixing a longitudinal carrier to a bone fixing element - Google Patents

Device for fixing a longitudinal carrier to a bone fixing element Download PDF

Info

Publication number
US7713289B2
US7713289B2 US11/339,810 US33981006A US7713289B2 US 7713289 B2 US7713289 B2 US 7713289B2 US 33981006 A US33981006 A US 33981006A US 7713289 B2 US7713289 B2 US 7713289B2
Authority
US
United States
Prior art keywords
bore
channel
longitudinal carrier
bone
conical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US11/339,810
Other versions
US20060173455A1 (en
Inventor
Romano Matthys
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AO Technology AG
Synthes USA LLC
Original Assignee
Synthes USA LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Synthes USA LLC filed Critical Synthes USA LLC
Assigned to SYNTHES AG CHUR, SYNTHES (USA) reassignment SYNTHES AG CHUR ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MATTHYS, ROMANO
Publication of US20060173455A1 publication Critical patent/US20060173455A1/en
Assigned to SYNTHES USA, LLC reassignment SYNTHES USA, LLC CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SYNTHES (U.S.A.)
Application granted granted Critical
Publication of US7713289B2 publication Critical patent/US7713289B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7041Screws or hooks combined with longitudinal elements which do not contact vertebrae with single longitudinal rod offset laterally from single row of screws or hooks
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8052Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
    • A61B17/8057Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread

Definitions

  • the invention relates to a device for mutually securing a longitudinal carrier and a bone fixing element.
  • a spinal or connecting rod i.e., a longitudinal carrier
  • a bone fixing element preferably a bone screw
  • U.S. Pat. No. 4,920,959 discloses an external fixture which is relatively cumbersome. It includes twin-rod holders, a pair of longitudinal fixture frame rods, a bone screw for each rod holder, and operating screws for fixing the bone screws to the rods.
  • twin-rod holders i.e., the clamping elements
  • a disadvantage of the individual twin-rod holders is that they apparently mount onto the longitudinal rods from only the ends of the rods.
  • Swiss Patent No. CH 632 658 discloses an implant for fixing bones.
  • the quality of the disclosed locking device depends directly on the pretensioned force, which can be realized between the Briden body and the bone.
  • the implant is used as a clamp, the individual clip body (i.e., clamp element) apparently mounts onto two parallel longitudinal rods from only the ends of the rods (lateral mounting is apparently not possible). This mounting may be difficult to realize in the case of a freehand application, particularly a percutaneous and minimally invasive application, and represents a major disadvantage.
  • WO 95/13754 discloses a clamp in which a longitudinal rod can be introduced laterally into an open channel of the clamp. The rod can then be secured by means of a set screw, which passes through the clamp.
  • the set screw has only this one function and cannot be used, for example, as a bone screw that could fasten the whole construct at the bone. The same is also true for the holding device disclosed in German Patent No. DE 195 34 136.
  • the object of the invention is accomplished with a device having a channel for receiving a longitudinal carrier and a bore partially intersecting the channel.
  • the bore has a conical shape for receiving the head of a fixation element after the body of the fixation element has passed through the bore. As the fixation element is secured in the bore, it locks the longitudinal carrier to the device.
  • the inventive device accommodates a longitudinal carrier and a standard head-locking screw corresponding to the device's conically-shaped bore. When the head-locking screw is tightened, it locks the longitudinal carrier in the inventive device.
  • the bore in the device has a conical angle ranging from 5° to 25° and preferably from 8° to 15°.
  • the inventive devices may be of two different embodiments, type A and type B. They differ in that one can be mounted from above (type A) a longitudinal carrier (e.g., a connecting rod) and the other from below (type B) a longitudinal carrier.
  • a longitudinal carrier e.g., a connecting rod
  • the locking principle is the same for both.
  • type A the conical bore tapers inward towards the channel and the smaller opening of the bore is on the same side of the body of the device as the channel.
  • the device can be advantageously slipped laterally on top of an already positioned and/or secured longitudinal rod.
  • the conical bore expands toward the channel and the larger opening of the bore is on the same side of the body as the channel.
  • the longitudinal carrier can be advantageously introduced laterally into a type B device already coupled to a bone fixation element.
  • the device additionally includes a bone fixation element, preferably in the form of a bone screw having a tip, a threaded shaft, and a head.
  • the head is suitable for manipulating the screw, and the tip is suitable for insertion into the bone. This permits the setting of bone fragments via the bone screw.
  • the head of the bone fixation element has an external thread, which corresponds to an internal thread of the bore. This preferably ensures the least possible material abrasion during the fixation.
  • the pitch of the external thread may be 0.1 to 3.0 mm and preferably is 0.25 to 1.50 mm.
  • the head of the bone fixation element tapers conically towards the tip.
  • the conically tapering head may have a conical angle ranging from 5° to 25° and preferably from 8° to 15°.
  • a type A device may be combined with a type B device.
  • Such a combination has the advantage of forming a rigid frame together with the treated bone.
  • a general method of operation for the inventive device includes the following:
  • the longitudinal carrier is introduced through a stab incision into the region of the patient that is to be treated.
  • the carrier is then pushed percutaneously into the desired position.
  • the surgeon can now contour the longitudinal carrier appropriately.
  • the desired number of inventive devices can be introduced percutaneously through corresponding stabbed incisions and mounted laterally directly on the carrier.
  • the angularly stable head-locking screws can now be screwed into the bores of the inventive devices, but not yet tightened.
  • the angularly stable head locking screws can then be tightened so that the construct, formed from the longitudinal carrier, the inventive devices, and the bone screws, becomes rigid and the fracture is fixed.
  • a more particular method of operation for the inventive device includes the following:
  • a type B inventive device is positioned relative to the affected bone part, and a head-locking screw is screwed through the conical bore of the type B device to a predetermined depth, so that the device is pre-fixed.
  • the longitudinal carrier is then contoured to meet anatomical requirements and inserted in the open channel of the already pre-mounted type B device.
  • the head-locking screw can now be tightened completely in the type B device, so that the longitudinal carrier is fixed at the device.
  • the fracture is set over the longitudinal carrier with a suitable setting instrument, and the set bone fragments are fixed by means of type A or type B devices.
  • the bone fixation construct optionally is supplemented with additional type A or type B devices.
  • FIG. 1 is an exploded representation of a bone fixation device with a longitudinal carrier, two different types of the inventive device, and two bone screws;
  • FIG. 2 is an elevational view of an inventive device of type B
  • FIG. 3 is a plan view of the device of FIG. 2 ;
  • FIG. 4 is an elevational view of an inventive device of type A.
  • FIG. 5 is a plan view of the device of FIG. 4 .
  • FIG. 1 shows two embodiments of the inventive device.
  • Devices 1 , 2 connect a longitudinal carrier 3 to respective bone fixation elements 4 .
  • the two embodiments of the device differ primarily in the construction of a channel 6 , 6 ′ for accommodating longitudinal carrier 3 .
  • the channel 6 is open towards the lower surface 16 of the device body 5 , which is directed towards the portion of the bone fixation element 4 constructed here as threaded shaft 11 .
  • channel 6 ′ is open towards the upper surface 17 of body 5 ′, adjoining head 12 of bone fixation element 4 .
  • the open surface of channel 6 , 6 ′ has a width B transverse to the channel axis 7 , 7 ′, which is larger than or equal to the diameter of longitudinal carrier 3 .
  • longitudinal carrier 3 can be introduced transversely into the channel 6 , 6 ′ from below (type A) or from above (type B).
  • bone fixation element 4 is constructed as a bone screw 18 having a tip 10 , a threaded shaft 11 , and a conical head 12 .
  • the threaded shaft 11 can be screwed into a bone, especially a pedicle bone.
  • Conical head 12 has a smaller diameter towards threaded shaft 11 .
  • Conical bore 8 which is complementary to head 12 , allows threaded shaft 11 to pass through body 5 , 5 ′ from upper surface 17 to lower surface 16 .
  • the longitudinal axis 19 of bore 8 , 8 ′ is skewed with respect to channel axis 7 , 7 ′.
  • the larger opening 14 of bore 8 , 8 ′ discharges into upper surface 17 and the smaller opening 15 discharges into lower surface 16 .
  • longitudinal axis 19 of bore 8 , 8 ′ is perpendicular to channel axis 7 , 7 ′, a distance X separating longitudinal axis 19 from channel axis 7 , 7 ′.
  • the dimensions of distance X are such that conical bore 8 , 8 ′ intersects channel 6 , 6 ′—distance X being larger than the sum of radius R of longitudinal carrier 3 and radius r of threaded shaft 11 of the barren fixation element 4 .
  • threaded shaft 11 of bone fixation element 4 can pass through bore 8 8 ′, even when the longitudinal carrier 3 is introduced into channel 6 6 ′, and be screwed into a bone until conical head 12 of bone fixation element 4 , which is complementary to bore 8 , 8 ′, has been introduced into bore 8 , 8 ′ to such an extent that it contacts longitudinal carrier 3 .
  • Longitudinal carrier 3 can then be fixed in channel 6 , 6 ′ by tightening bone fixation element 4 .
  • channel 6 , 6 ′ has a concave sidewall 20 , which is remote from bore 8 , 8 ′ and secures longitudinal carrier 3 placed in channel 6 , 6 ′ against displacements parallel to longitudinal axis 19 of bore 8 , 8 ′.
  • longitudinal carrier 3 placed in channel 6 , 6 ′ is (1) pressed by conical head 12 transversely to channel axis 7 , 7 ′ against the concave side wall 20 of channel 6 , 6 ′ and (2) fixed in channel 6 , 6 ′.
  • bore 8 , 8 ′ is provided with an internal thread 9 , 9 ′, and the head 12 of bone fixation element 4 is provided with a complementary external thread 13 , so that stable locking occurs between bone fixation element 4 , body 5 , 5 ′ and longitudinal carrier 3 when bone fixation element 4 is tightened.

Abstract

The device is used for mutually securing or clamping a longitudinal carrier (e.g., a spinal rod) to a bone fixing element (e.g., a pedicle screw). The device includes a body having a channel that is open along its longitudinal axis on one side for receiving the longitudinal carrier. The body has a bore that extends fully through the body and at least partially intersects the channel. The bore is conical in form and has a large opening, a small opening, and an inner thread. The head of the bone fixing element has an outer thread that corresponds to the inner thread. As the fixing element is secured in the bore, it locks the longitudinal carrier to the device.

Description

CROSS REFERENCE TO RELATED APPLICATION
This is a continuation of International Patent Application No. PCT/CH2003/00516, filed Jul. 29, 2003, the entire contents of which are incorporated herein by reference thereto.
TECHNICAL FIELD OF THE INVENTION
The invention relates to a device for mutually securing a longitudinal carrier and a bone fixing element. With such devices, a spinal or connecting rod (i.e., a longitudinal carrier), such as that used in spinal surgery, can be connected over a bone fixing element (preferably a bone screw) to obtain a rigid construct.
BACKGROUND OF THE INVENTION
Witzel et al. U.S. Pat. No. 4,920,959 discloses an external fixture which is relatively cumbersome. It includes twin-rod holders, a pair of longitudinal fixture frame rods, a bone screw for each rod holder, and operating screws for fixing the bone screws to the rods. A disadvantage of the individual twin-rod holders (i.e., the clamping elements) is that they apparently mount onto the longitudinal rods from only the ends of the rods.
Swiss Patent No. CH 632 658 discloses an implant for fixing bones. The quality of the disclosed locking device depends directly on the pretensioned force, which can be realized between the Briden body and the bone. Here also, if the implant is used as a clamp, the individual clip body (i.e., clamp element) apparently mounts onto two parallel longitudinal rods from only the ends of the rods (lateral mounting is apparently not possible). This mounting may be difficult to realize in the case of a freehand application, particularly a percutaneous and minimally invasive application, and represents a major disadvantage.
On the other hand, Vignaud et al. U.S. Pat. No. 5,290,288, WO 94/01049, and French Patent No. FR 2 775 587 all disclose open clamps in which a longitudinal carrier can be laterally mounted. However, they all have the disadvantage of requiring an additional element (e.g., a nut) for their fixation. Furthermore, the clamp holding device is the bone screw itself, which typically must first be fixed in the bone before the longitudinal carrier can be placed on the bone screw.
Finally, WO 95/13754 discloses a clamp in which a longitudinal rod can be introduced laterally into an open channel of the clamp. The rod can then be secured by means of a set screw, which passes through the clamp. However, the set screw has only this one function and cannot be used, for example, as a bone screw that could fasten the whole construct at the bone. The same is also true for the holding device disclosed in German Patent No. DE 195 34 136.
Accordingly, known devices can be quite complicated having little flexibility with respect to their application.
In view of the foregoing, it is an object of the invention to provide a device that has a very simple structure and that can be used flexibly and in minimally invasive surgical techniques.
SUMMARY OF THE INVENTION
The object of the invention is accomplished with a device having a channel for receiving a longitudinal carrier and a bore partially intersecting the channel. The bore has a conical shape for receiving the head of a fixation element after the body of the fixation element has passed through the bore. As the fixation element is secured in the bore, it locks the longitudinal carrier to the device.
The advantages of the inventive device are many and preferably include the following:
    • it is only one part;
    • it can be used in minimally invasive techniques and does not require a large opening;
    • prestressing between the device and the bone is not necessary to ensure locking;
    • it can be used as an external fixator as well as for an internal fixator;
    • the longitudinal carrier can be positioned in the device from the very start and pre-shaped, and the user can then set the bone screw when an appropriate position is determined;
    • the position of the individual devices can be freely selected by the user;
    • additional devices, if required, can simply be laterally slipped onto the longitudinal carrier without having to be moved laboriously over the whole length of the longitudinal carrier;
    • before the inventive devices are set, the longitudinal carrier can be brought in to give the surgeon an opportunity to determine more easily the screw positions;
    • setting a fracture over a longitudinal carrier is possible;
    • a user can connect and fix the individual fracture parts by a minimally invasive technique over a construct of a longitudinal carrier and several inventive devices by means of angularly stable head locking screws; and
    • the inventive device can be used not only in spinal column applications, but also in other osteosynthetic applications.
The inventive device accommodates a longitudinal carrier and a standard head-locking screw corresponding to the device's conically-shaped bore. When the head-locking screw is tightened, it locks the longitudinal carrier in the inventive device.
The bore in the device has a conical angle ranging from 5° to 25° and preferably from 8° to 15°.
The inventive devices, realized in the form of clamps, may be of two different embodiments, type A and type B. They differ in that one can be mounted from above (type A) a longitudinal carrier (e.g., a connecting rod) and the other from below (type B) a longitudinal carrier. The locking principle is the same for both. For type A, the conical bore tapers inward towards the channel and the smaller opening of the bore is on the same side of the body of the device as the channel. The device can be advantageously slipped laterally on top of an already positioned and/or secured longitudinal rod. For type B, the conical bore expands toward the channel and the larger opening of the bore is on the same side of the body as the channel. The longitudinal carrier can be advantageously introduced laterally into a type B device already coupled to a bone fixation element.
In one embodiment, the device additionally includes a bone fixation element, preferably in the form of a bone screw having a tip, a threaded shaft, and a head. The head is suitable for manipulating the screw, and the tip is suitable for insertion into the bone. This permits the setting of bone fragments via the bone screw.
The head of the bone fixation element has an external thread, which corresponds to an internal thread of the bore. This preferably ensures the least possible material abrasion during the fixation. The pitch of the external thread may be 0.1 to 3.0 mm and preferably is 0.25 to 1.50 mm.
The head of the bone fixation element tapers conically towards the tip. The conically tapering head may have a conical angle ranging from 5° to 25° and preferably from 8° to 15°.
In another embodiment, a type A device may be combined with a type B device. Such a combination has the advantage of forming a rigid frame together with the treated bone.
A general method of operation for the inventive device includes the following:
The longitudinal carrier is introduced through a stab incision into the region of the patient that is to be treated. The carrier is then pushed percutaneously into the desired position. The surgeon can now contour the longitudinal carrier appropriately. When the contour of the carrier is satisfactory, the desired number of inventive devices can be introduced percutaneously through corresponding stabbed incisions and mounted laterally directly on the carrier. The angularly stable head-locking screws can now be screwed into the bores of the inventive devices, but not yet tightened. When the setting is satisfactory, the angularly stable head locking screws can then be tightened so that the construct, formed from the longitudinal carrier, the inventive devices, and the bone screws, becomes rigid and the fracture is fixed.
A more particular method of operation for the inventive device includes the following:
A type B inventive device is positioned relative to the affected bone part, and a head-locking screw is screwed through the conical bore of the type B device to a predetermined depth, so that the device is pre-fixed. The longitudinal carrier is then contoured to meet anatomical requirements and inserted in the open channel of the already pre-mounted type B device. The head-locking screw can now be tightened completely in the type B device, so that the longitudinal carrier is fixed at the device. The fracture is set over the longitudinal carrier with a suitable setting instrument, and the set bone fragments are fixed by means of type A or type B devices. The bone fixation construct optionally is supplemented with additional type A or type B devices.
BRIEF DESCRIPTION OF THE DRAWINGS
The detailed description will be better understood in conjunction with the accompanying drawings, in which like reference characters represent like elements, as follows:
FIG. 1 is an exploded representation of a bone fixation device with a longitudinal carrier, two different types of the inventive device, and two bone screws;
FIG. 2 is an elevational view of an inventive device of type B;
FIG. 3 is a plan view of the device of FIG. 2;
FIG. 4 is an elevational view of an inventive device of type A; and
FIG. 5 is a plan view of the device of FIG. 4.
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows two embodiments of the inventive device. Devices 1, 2 connect a longitudinal carrier 3 to respective bone fixation elements 4. The two embodiments of the device differ primarily in the construction of a channel 6, 6′ for accommodating longitudinal carrier 3. For the first embodiment (type A), the channel 6 is open towards the lower surface 16 of the device body 5, which is directed towards the portion of the bone fixation element 4 constructed here as threaded shaft 11. For the second embodiment (type B), channel 6′ is open towards the upper surface 17 of body 5′, adjoining head 12 of bone fixation element 4. At lower surface 16 (for type A) or at upper surface 17 (for type B) of body 5, 5′, respectively, the open surface of channel 6, 6′ has a width B transverse to the channel axis 7, 7′, which is larger than or equal to the diameter of longitudinal carrier 3. Thus, longitudinal carrier 3 can be introduced transversely into the channel 6, 6′ from below (type A) or from above (type B).
For the embodiments shown, bone fixation element 4 is constructed as a bone screw 18 having a tip 10, a threaded shaft 11, and a conical head 12. The threaded shaft 11 can be screwed into a bone, especially a pedicle bone. Conical head 12 has a smaller diameter towards threaded shaft 11. Conical bore 8, which is complementary to head 12, allows threaded shaft 11 to pass through body 5, 5′ from upper surface 17 to lower surface 16. The longitudinal axis 19 of bore 8, 8′ is skewed with respect to channel axis 7, 7′. For both embodiments, type A and type B, the larger opening 14 of bore 8, 8′ discharges into upper surface 17 and the smaller opening 15 discharges into lower surface 16. In particular, for the type A and type B embodiments shown here, longitudinal axis 19 of bore 8, 8′ is perpendicular to channel axis 7, 7′, a distance X separating longitudinal axis 19 from channel axis 7, 7′. The dimensions of distance X are such that conical bore 8, 8′ intersects channel 6, 6′—distance X being larger than the sum of radius R of longitudinal carrier 3 and radius r of threaded shaft 11 of the barren fixation element 4. With that, threaded shaft 11 of bone fixation element 4 can pass through bore 8 8′, even when the longitudinal carrier 3 is introduced into channel 6 6′, and be screwed into a bone until conical head 12 of bone fixation element 4, which is complementary to bore 8, 8′, has been introduced into bore 8, 8′ to such an extent that it contacts longitudinal carrier 3. Longitudinal carrier 3 can then be fixed in channel 6, 6′ by tightening bone fixation element 4.
For both types A, B of respective devices 1, 2, channel 6, 6′ has a concave sidewall 20, which is remote from bore 8, 8′ and secures longitudinal carrier 3 placed in channel 6, 6′ against displacements parallel to longitudinal axis 19 of bore 8, 8′. When the bone fixation element 4 is tightened in the device, longitudinal carrier 3 placed in channel 6, 6′ is (1) pressed by conical head 12 transversely to channel axis 7, 7′ against the concave side wall 20 of channel 6, 6′ and (2) fixed in channel 6, 6′. Furthermore, bore 8, 8′ is provided with an internal thread 9, 9′, and the head 12 of bone fixation element 4 is provided with a complementary external thread 13, so that stable locking occurs between bone fixation element 4, body 5, 5′ and longitudinal carrier 3 when bone fixation element 4 is tightened.

Claims (10)

1. A three piece device consisting of:
a longitudinal carrier;
a body including a channel having a longitudinal axis and an opening along the longitudinal axis for receiving the longitudinal carrier, the body having a bore extending completely there through, the channel and the bore partially intersecting each other, the bore constructed conically and having a first opening on one side of the body and a second opening on another side of the body, the first opening larger than the second opening, and the bore having an internal thread; and
a bone screw including a tip, a threaded shaft for threadably engaging bone, and an externally threaded conical head portion for engaging the internally threaded conical bore such that rotation of the bone screw causes the threaded shaft to engage the bone, the externally threaded head portion to engage the internally threaded bore and the externally threaded head portion to contact the longitudinal carrier positioned with the channel so that the longitudinal carrier is fixed between an inner surface of the channel and the head portion of the bone screw.
2. The device of claim 1 wherein the bore has a conical angle ranging from 5 degrees to 25 degrees.
3. The device of claim 1 wherein the bore has a conical angle ranging from 8 degrees to 15 degrees.
4. The device of claim 1 wherein:
the conical bore tapers inward towards the channel; and
the smaller second opening of the bore is on the same side of the body as the channel.
5. The device of claim 1 wherein
the conical bore expands towards the channel; and
the larger first opening of the bore is on the same side of the body as the channel.
6. The device of claim 1 wherein the external thread has a pitch from about 0.1 to 3.0 millimeters.
7. The device of claim 1 wherein the external thread has a pitch from about 0.25 to 1.50 millimeters.
8. The device of claim 1 wherein the head of the bone screw tapers conically toward the tip.
9. The device of claim 8 wherein the head has a conical angle ranging from 5 degrees to 25 degrees.
10. The device of claim 1 wherein the longitudinal axis of the channel and the bore are perpendicular to each other.
US11/339,810 2003-07-29 2006-01-24 Device for fixing a longitudinal carrier to a bone fixing element Active 2026-01-14 US7713289B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2003/000516 WO2005009261A1 (en) 2003-07-29 2003-07-29 Device for fixing a longitudinal carrier to a bone fixing element

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2003/000516 Continuation WO2005009261A1 (en) 2003-07-29 2003-07-29 Device for fixing a longitudinal carrier to a bone fixing element

Publications (2)

Publication Number Publication Date
US20060173455A1 US20060173455A1 (en) 2006-08-03
US7713289B2 true US7713289B2 (en) 2010-05-11

Family

ID=34085299

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/339,810 Active 2026-01-14 US7713289B2 (en) 2003-07-29 2006-01-24 Device for fixing a longitudinal carrier to a bone fixing element

Country Status (13)

Country Link
US (1) US7713289B2 (en)
EP (1) EP1648318B1 (en)
JP (1) JP4451844B2 (en)
KR (1) KR101031399B1 (en)
CN (1) CN100418487C (en)
AR (1) AR044937A1 (en)
AT (1) ATE428361T1 (en)
AU (1) AU2003249824B2 (en)
BR (1) BR0318423B1 (en)
CA (1) CA2533997C (en)
DE (1) DE50311435D1 (en)
NZ (1) NZ544978A (en)
WO (1) WO2005009261A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110137349A1 (en) * 2005-04-12 2011-06-09 Moskowitz Nathan C Horizontal-transvertebral curvilinear nail-screws with inter-locking rigid or jointed flexible rods for spinal fusion
US9358122B2 (en) 2011-01-07 2016-06-07 K2M, Inc. Interbody spacer
US20160183983A1 (en) * 2014-12-09 2016-06-30 John A. Heflin Spine alignment system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8506605B2 (en) * 2002-09-18 2013-08-13 Simplicity Orthopedics, Inc. Method and apparatus for securing an object to bone and/or for stabilizing bone
DE102006056950B4 (en) * 2006-11-30 2013-07-25 Normed Medizin-Technik Gmbh Orthopedic lag screw for osteosynthesis and / or fixation of bone segments
WO2008133883A2 (en) * 2007-04-23 2008-11-06 Simplicity Orthopedics, Inc. Method and apparatus for securing an object to bone
CN108158642A (en) * 2018-02-06 2018-06-15 熊鹰 A kind of assembly type Multifunctional orthopedic inner fixing device
TWM643626U (en) 2020-09-30 2023-07-11 日商信越化學工業股份有限公司 Laser-induced forward transfer system, laser-induced forward transfer device, optical element transferred acceptor substrate manufacturing system, and display manufacturing system

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH632658A5 (en) 1978-10-26 1982-10-29 Sulzer Ag Implant for the fixation of bones and/or bone parts
US4920959A (en) 1986-04-04 1990-05-01 Ulrich Witzel External fixture for osteosynthetis
US4946458A (en) 1986-04-25 1990-08-07 Harms Juergen Pedicle screw
WO1994001049A1 (en) 1992-07-13 1994-01-20 Stryker Corporation Rachidian instrumentation with orientable rod
US5290288A (en) 1990-02-08 1994-03-01 Vignaud Jean Louis Multi-function device for the osteosynthesis of rachis
WO1995013754A1 (en) 1993-11-19 1995-05-26 Cross Medical Products, Inc. Transverse link for spinal implant system
DE19534136A1 (en) 1994-09-15 1996-03-21 Tornier Sa External or internal fixator for skeletal arthroplasty
US5527314A (en) * 1993-01-04 1996-06-18 Danek Medical, Inc. Spinal fixation system
US5676665A (en) 1995-06-23 1997-10-14 Bryan; Donald W. Spinal fixation apparatus and method
WO1998043551A1 (en) 1997-04-01 1998-10-08 Daniel Chopin Apparatus for osteosynthesis comprising a connector of the spinal pin and the anchoring elements
FR2775587A1 (en) 1998-03-03 1999-09-10 Hassan Razian Adjustable damping spinal disc insert
WO2001019267A1 (en) 1999-09-13 2001-03-22 Synthes Ag Chur Bone plate system
US6206881B1 (en) * 1995-09-06 2001-03-27 Synthes (Usa) Bone plate
JP2001299771A (en) 2000-04-21 2001-10-30 Robert Reed Shokai Co Ltd Connecting implement for vertebral member
US6482207B1 (en) * 2000-07-13 2002-11-19 Fastenetix, Llc Efficient assembling modular locking pedicle screw

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH683024A5 (en) * 1991-04-16 1993-12-31 Synthes Ag Connecting means for connecting a first adjustable with a second construction element, in particular of tubes or rods of a fixation device.
FR2697992B1 (en) * 1992-11-18 1994-12-30 Eurosurgical Device for attaching to a rod of an organ, in particular for spinal orthopedic instrumentation.
FR2709411B1 (en) * 1993-09-03 1995-11-17 Sofamor Stabilizing forceps of a cervical spinal segment.
US20030114853A1 (en) * 2001-10-12 2003-06-19 Ian Burgess Polyaxial cross connector
JP2003180703A (en) * 2001-12-12 2003-07-02 Robert Reed Shokai Co Ltd Rod fixing device

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH632658A5 (en) 1978-10-26 1982-10-29 Sulzer Ag Implant for the fixation of bones and/or bone parts
US4920959A (en) 1986-04-04 1990-05-01 Ulrich Witzel External fixture for osteosynthetis
US4946458A (en) 1986-04-25 1990-08-07 Harms Juergen Pedicle screw
US5290288A (en) 1990-02-08 1994-03-01 Vignaud Jean Louis Multi-function device for the osteosynthesis of rachis
WO1994001049A1 (en) 1992-07-13 1994-01-20 Stryker Corporation Rachidian instrumentation with orientable rod
US5534002A (en) * 1993-01-04 1996-07-09 Danek Medical, Inc. Spinal fixation system
US5527314A (en) * 1993-01-04 1996-06-18 Danek Medical, Inc. Spinal fixation system
WO1995013754A1 (en) 1993-11-19 1995-05-26 Cross Medical Products, Inc. Transverse link for spinal implant system
DE19534136A1 (en) 1994-09-15 1996-03-21 Tornier Sa External or internal fixator for skeletal arthroplasty
US5662651A (en) * 1994-09-15 1997-09-02 Tornier S.A. External or internal fixator for repairing fractures or arthroplasties of the skeleton
US5676665A (en) 1995-06-23 1997-10-14 Bryan; Donald W. Spinal fixation apparatus and method
US6206881B1 (en) * 1995-09-06 2001-03-27 Synthes (Usa) Bone plate
WO1998043551A1 (en) 1997-04-01 1998-10-08 Daniel Chopin Apparatus for osteosynthesis comprising a connector of the spinal pin and the anchoring elements
US6248104B1 (en) * 1997-04-01 2001-06-19 Daniel Chopin Apparatus for osteosynthesis comprising a connector of the spinal pin and the anchoring elements
FR2775587A1 (en) 1998-03-03 1999-09-10 Hassan Razian Adjustable damping spinal disc insert
WO2001019267A1 (en) 1999-09-13 2001-03-22 Synthes Ag Chur Bone plate system
JP2001299771A (en) 2000-04-21 2001-10-30 Robert Reed Shokai Co Ltd Connecting implement for vertebral member
US6482207B1 (en) * 2000-07-13 2002-11-19 Fastenetix, Llc Efficient assembling modular locking pedicle screw

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Australian Patent Office Examiners First Report dated Feb. 8, 2008.
Notice of the Reason for the Preliminary Rejection issued by Japanese Patent Office on Jun. 3, 2009.

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110137349A1 (en) * 2005-04-12 2011-06-09 Moskowitz Nathan C Horizontal-transvertebral curvilinear nail-screws with inter-locking rigid or jointed flexible rods for spinal fusion
US9888918B2 (en) * 2005-04-12 2018-02-13 Nathan C. Moskowitz Horizontal-transvertebral curvilinear nail-screws with inter-locking rigid or jointed flexible rods for spinal fusion
US10028740B2 (en) 2005-04-12 2018-07-24 Moskowitz Family Llc Spinal fusion implant with curvilinear nail-screws
US10258329B2 (en) 2005-04-12 2019-04-16 Moskowitz Family Llc Spinal fusion implant with curvilinear nail-screws
US11918207B2 (en) 2005-04-12 2024-03-05 Moskowitz Family Llc Spinal fusion implant
US9358122B2 (en) 2011-01-07 2016-06-07 K2M, Inc. Interbody spacer
US20160183983A1 (en) * 2014-12-09 2016-06-30 John A. Heflin Spine alignment system
US10034690B2 (en) * 2014-12-09 2018-07-31 John A. Heflin Spine alignment system
US20190239928A1 (en) * 2014-12-09 2019-08-08 John A. Heflin Spine alignment system
US10736668B2 (en) * 2014-12-09 2020-08-11 John A. Heflin Spine alignment system
US11419637B2 (en) 2014-12-09 2022-08-23 John A. Heflin Spine alignment system

Also Published As

Publication number Publication date
WO2005009261A1 (en) 2005-02-03
JP4451844B2 (en) 2010-04-14
ATE428361T1 (en) 2009-05-15
KR20060066066A (en) 2006-06-15
EP1648318A1 (en) 2006-04-26
CA2533997A1 (en) 2005-02-03
BR0318423B1 (en) 2012-07-24
NZ544978A (en) 2008-10-31
AU2003249824A1 (en) 2005-02-14
DE50311435D1 (en) 2009-05-28
BR0318423A (en) 2006-08-01
JP2007506445A (en) 2007-03-22
CN1835717A (en) 2006-09-20
CN100418487C (en) 2008-09-17
US20060173455A1 (en) 2006-08-03
CA2533997C (en) 2011-02-22
KR101031399B1 (en) 2011-04-26
AU2003249824B2 (en) 2009-02-26
AR044937A1 (en) 2005-10-12
EP1648318B1 (en) 2009-04-15

Similar Documents

Publication Publication Date Title
US9050142B2 (en) Angularly stable device for mutually fixing a longitudinal carrier with a bone fixation element
ZA200600577B (en) Compounds for the treatment of metabolic disorders
US7713289B2 (en) Device for fixing a longitudinal carrier to a bone fixing element
JP4913067B2 (en) Intraosseous nail
US6786907B2 (en) Instrumentation for stabilizing certain vertebrae of the spine
US5993449A (en) Bone-fixing device
EP2265201B1 (en) Spinal fixation system
KR101144067B1 (en) Anatomical distal radius fracture fixation plate and methods of using the same
US7648520B2 (en) Pedicle screw assembly
US20080077143A1 (en) Apparatus for connecting a longitudinal member to a bone portion
US20110098753A1 (en) Osteosynthetic clamp for attaching a bone anchor to a support rod
US7195632B2 (en) Connecting element
CA2545555A1 (en) Polyaxial bone anchor and method of spinal fixation
KR20090009853A (en) Connector apparatus
JP2002527137A (en) Vertebral osteosynthesis system with excellent stability
AU759901B2 (en) Repositioning device for bone fragments
US7833247B2 (en) Orthopedic clamps
MXPA00004619A (en) Implant for stabilizing a fracture and screw for use in surgery

Legal Events

Date Code Title Description
AS Assignment

Owner name: SYNTHES (USA),PENNSYLVANIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MATTHYS, ROMANO;REEL/FRAME:017725/0565

Effective date: 20060327

Owner name: SYNTHES AG CHUR,SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MATTHYS, ROMANO;REEL/FRAME:017725/0565

Effective date: 20060327

Owner name: SYNTHES (USA), PENNSYLVANIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MATTHYS, ROMANO;REEL/FRAME:017725/0565

Effective date: 20060327

Owner name: SYNTHES AG CHUR, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MATTHYS, ROMANO;REEL/FRAME:017725/0565

Effective date: 20060327

AS Assignment

Owner name: SYNTHES USA, LLC, PENNSYLVANIA

Free format text: CHANGE OF NAME;ASSIGNOR:SYNTHES (U.S.A.);REEL/FRAME:022826/0140

Effective date: 20081223

Owner name: SYNTHES USA, LLC,PENNSYLVANIA

Free format text: CHANGE OF NAME;ASSIGNOR:SYNTHES (U.S.A.);REEL/FRAME:022826/0140

Effective date: 20081223

STCF Information on status: patent grant

Free format text: PATENTED CASE

FPAY Fee payment

Year of fee payment: 4

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552)

Year of fee payment: 8

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 12